38940520

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1999}}^1$

素因数の和:2497

約数の個数: 32

約数和(自身を含む): 87840000

約数和(自身を除く): 48899480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 1999, 2435, 3896, 3998, 4870, 7996, 9740, 9995, 15992, 19480, 19990, 39980, 79960, 973513, 1947026, 3894052, 4867565, 7788104, 9735130, 19470260, 38940520]

約数ペア:

[(1, 38940520), (2, 19470260), (4, 9735130), (5, 7788104), (8, 4867565), (10, 3894052), (20, 1947026), (40, 973513), (487, 79960), (974, 39980), (1948, 19990), (1999, 19480), (2435, 15992), (3896, 9995), (3998, 9740), (4870, 7996)]